Elections were held in Calabarzon for seats in the House of Representatives of the Philippines on May 10, 2010.
The candidate with the most votes won that district's seat for the 15th Congress of the Philippines.
Incumbent Eileen Ermita-Buhain is in her third consecutive term and is ineligible to run; her father Eduardo is her party's nominee for the seat.
Eduardo Ermita placed the result of the election under protest in the House of Representatives Electoral Tribunal.
Hermilando Mandanas is the incumbent.
Victoria Hernandez-Reyes is in her third consecutive term and is ineligible to run; her husband Rodrigo is her party's nominee for the seat.
The result of the election is under protest in the House of Representatives Electoral Tribunal.
Mark Llandro Mendoza is the incumbent.
Cavite, the most populous province in the country according to the 2007 census, was reapportioned into seven districts from the original three. The province now has the most number of legislative districts among provinces and cities.
Jun Abaya is the incumbent.
Elpidio Barzaga, Jr. is the incumbent, originally from the old 2nd district.
Danilo Fernandez was originally elected during the 2007 election, but the House Electoral Tribunal ruled that his residence in the district was not enough and was disqualified; no replacement was named. Fernandez is running again for the district's seat this year.
Timmy Chipeco is the incumbent.
The result of the election is under protest in the House of Representatives Electoral Tribunal.
Maria Evita Arago is the incumbent.
Edgar San Luis is the incumbent and is running unopposed.
Wilfrido Mark Enverga is the incumbent.
Devanadera placed the result of the election under protest in the House of Representatives Electoral Tribunal.
Incumbent Proceso Alcala decided not to seek reelection; his son Irvin is his party's nominee for the seat.
Danilo Suarez is the incumbent.
Incumbent Erin Tañada is running unopposed.
Incumbent Jack Duavit is in his third consecutive term already and is not eligible for reelection; Joel Duavit will run as his party's nominee in the district.
Incumbent Adeline Rodriguez-Zaldarriaga is not running; Isidro Rodriguez, Jr. will run as her party's nominee in the district.
Antipolo is a component city of Rizal.
Roberto Puno is the incumbent.
Incumbent Angelito Gatlabayan is running for mayor of Antipolo.